Garage conversion rules in Cranston, RI — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions to living space or ADUs in Cranston require building permits and RI State Building Code (SBC-2, IRC 2018) compliance. Converting within an existing footprint qualifies as an ADU by right under RIGL 45-24-73.
Converting a garage to habitable space in Cranston requires a building permit and compliance with RI SBC-2 (IRC 2018). Requirements include egress windows, ceiling height, insulation, electrical, plumbing, and HVAC. If the conversion eliminates required off-street parking, a zoning variance may be needed. Garage-to-ADU conversions within the existing footprint qualify as ADUs by right under RIGL 45-24-73. A Certificate of Occupancy is required before habitation. Attached ADUs must maintain single-family dwelling appearance per Cranston's zoning ordinance.
Unpermitted conversion: stop-work order. Occupancy without certificate: fines. Parking deficiency: variance required.
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Side-by-side rule comparisons with other cities in Providence County.
See how other cities in Providence County handle garage conversions.
See how Cranston's garage conversions rules stack up against other locations.
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